The Function of Digestion. SBI3Up. Tissue: a cluster of similar cells that share the same specialized structure and function. There are four main types of tissue : 1. Epithelial 2. Muscle 3. Nervous 4. Connective. Skeletal Muscle. Smooth Muscle. Cardiac Muscle.
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Tissue: a cluster of similar cells that share the same specialized structure and function.
There are four main types of tissue:
"Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.” -World Health Organization
Physical Health + Mental Health + Social Health
1) Physical activity
2) Medical conditions
3) Gender (female vs. Male)
Nutrients are divided into two groups:
*different from pesticide free organic in the grocery store – refers to its molecular makeup
Macromolecules are required everyday and in large quantities.
There are 4 main groups of Macronutrients:
4) Nucleic Acids
Consist of Carbon, Hydrogen & Oxygen atoms (Ratio --- 1 : 2 : 1)
Provides short-term or long-term energy storage for organisms
Provides materials to build cell membrane
Ex. Glucose (C6H12O6)
There are two forms of carbohydrates:
1) Monosaccahride(Simple Sugar)
2) Polysaccharide (Complex sugar)
Monosaccharidesdo not need to be brokendown and thus can be used directly as a form of quick energy
Disaccharidesconsists of two linked simple sugars but must be broken down to obtain energy.
Monosaccharide or Disaccharides
When large amounts of carbohydrates are consumed they are stored as glycogen in the liver and converted into fat.
Examples of carbohydrates:
potatoes, pasta, rice and bread.
Glycogen can be later broken down into glucose when the body requires energy.
Lipids are complex compounds that are insoluble in water.
Energy Storage: store 2.25X more energy per gram than other biological molecules
Many lipids consist of three fatty acid chains and a glycerol.
Phospholipids are a type of lipid that make up the cell membrane. Their hydrophilic (water-loving) and hydrophobic (water-hating) properties enable them to form a micelle.
The body has a variety of proteins that differ in shape, function and size.
They are built from amino acid (a.a.) that are joined by peptide bonds.
Nucleic Acids enable an organism to grow and develop due to its ability to create a genetic code.
5 C sugar
Examples: DNA and RNA
Nutrients must be broken down into smaller units so that they can be absorbed and delivered.
A Hydrolysis reaction must occur to break the bonds of the macromolecules.
Proteins that behave as catalysts and help to speed up chemical reactions. They enable hydrolysis reactions to occur at a quicker rate.
Highly specialized and combine to particular substrates (molecule that enzyme bonds to)
Vitamins and minerals are micronutrients
Micronutrients must be taken in small amounts to be part of a balanced diet
Minerals and vitamins are made up of both inorganic and organic substances.
Vitamins are organic compounds act as co-enzymes. They bind to the active site and activate an enzyme.
Minerals are inorganic compounds that must be continuously replenished in small quantities.
The body does not destroy them, but they are released through sweat and urine.
E.g: Bananas contain the mineral potassium